I have been using YurBuds 400 for many years. They are great for training because they sit very well in the ear and do not close with sweat. Volume and sound quality are excellent. I use them so often they wear out over time so I've ordered two more pairs. The two earbuds I received are absolutely not genuine "genuine" YurBuds 400. This is a very obvious cheap copy or fake. The sensations are very different and the earplugs are significantly different from the real ones. The sound quality is also comparatively poor. The volume is not enough, the sound is metallic, almost without a base. I don't know what's going on here, but these are definitely not "real" YurBuds. I've had at least 10 pairs and I know the difference! This is pretty obvious when you compare them to the 'real' product next to them.
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